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公开(公告)号:US3929841A
公开(公告)日:1975-12-30
申请号:US48521374
申请日:1974-07-02
Applicant: BASF AG
Inventor: ACKERMANN OTTO , EILINGSFELD HEINZ
IPC: C07C205/47 , C07C67/00 , C07C201/00 , D07B3/04 , C09B1/00
CPC classification number: D07B3/04 , C07C201/08 , C07C201/16 , C07C2603/24 , C07C205/47
Abstract: 1,5-DINITROANTHRAQUINONE IS ISOLATED FROM A NITRATION MIXTURE CONTAINING DINITROANTHRAQUINONES BY ALLOWING N-methylpyrrolidone to act on the nitroanthraquinone mixture. From 10 to 45% by weight of the nitroanthraquinone mixture remains undissolved and the undissolved material is separated from the solution. A dinitroanthraquinone is isolated which contains from 75 to 95% by weight of 1,5-dinitroanthraquinone and practically no Beta dinitroanthraquinones.
Abstract translation: 通过允许N-甲基吡咯烷酮作用于硝基蒽醌混合物,从含有四氮杂环戊烷的硝化混合物中分离出1,5-四硝基四氢喹啉。 10至45重量%的硝基蒽醌混合物保持未溶解,并且将未溶解的材料与溶液分离。 分离出二硝基蒽醌,其含有75至95重量%的1,5-二硝基蒽醌,实际上不含β-二硝基蒽醌。